Answers

Add 90/72 and 3/84

1^st number: 1 18/72, 2^nd number: 3/84

90/72 + 3/84 is 9/7.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 84 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 72 × 7 = 504,
   90/72 = 90 × 7/72 × 7 = 630/504
3. Likewise, for the 2nd fraction, since 84 × 6 = 504,
   3/84 = 3 × 6/84 × 6 = 18/504
4. Add the two like fractions:
   630/504 + 18/504 = 630 + 18/504 = 648/504
5. 648/504 simplified gives 9/7
6. So, 90/72 + 3/84 = 9/7
   In mixed form: 12/7

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